385 lines
11 KiB
Plaintext
385 lines
11 KiB
Plaintext
/* Copyright (C) 2004 Garrett A. Kajmowicz
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This file is part of the uClibc++ Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <basic_definitions>
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#ifndef HEADER_STD_SSTREAM
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#define HEADER_STD_SSTREAM 1
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#include <iosfwd>
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#include <ios>
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#include <istream>
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#include <ostream>
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#include <iostream>
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#include <string>
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#pragma GCC visibility push(default)
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namespace std{
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template <class charT, class traits, class Allocator>
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class _UCXXEXPORT basic_stringbuf : public basic_streambuf<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef typename traits::int_type int_type;
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typedef typename traits::pos_type pos_type;
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typedef typename traits::off_type off_type;
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typedef typename Allocator::size_type size_type;
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explicit _UCXXEXPORT basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out)
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: data(), ielement(0), oelement(0)
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{
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basic_streambuf<charT,traits>::openedFor = which;
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}
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explicit _UCXXEXPORT basic_stringbuf(const basic_string<charT,traits,Allocator>& str,
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ios_base::openmode which = ios_base::in | ios_base::out)
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: data(str), ielement(0), oelement(0)
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{
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if(which & ios_base::ate){
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oelement = data.length();
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}
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basic_streambuf<charT,traits>::openedFor = which;
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}
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virtual _UCXXEXPORT ~basic_stringbuf() { }
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_UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
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return data;
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}
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_UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
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data = s;
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ielement = 0;
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if(basic_streambuf<charT,traits>::openedFor & ios_base::ate){
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oelement = data.length();
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}else{
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oelement = 0;
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}
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}
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protected:
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virtual _UCXXEXPORT int sync(){
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return 0;
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}
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virtual _UCXXEXPORT int_type underflow(){
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if(ielement >= data.length()){
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return traits::eof();
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}
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return traits::to_int_type(data[ielement]);
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}
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virtual _UCXXEXPORT int_type uflow(){
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int_type retval = underflow();
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if(retval != traits::eof()){
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++ielement;
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}
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return retval;
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}
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virtual _UCXXEXPORT int_type pbackfail(int_type c = traits::eof()){
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//Error possibilities
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if(ielement == 0){
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return traits::eof();
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}
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if(ielement > data.length()){
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ielement = data.length();
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return traits::eof();
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}
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//eof passed in
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if(traits::eq_int_type(c,traits::eof())==true){
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--ielement;
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return traits::not_eof(c);
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}
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if(traits::eq(traits::to_char_type(c),data[ielement-1]) == true){
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--ielement;
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return c;
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}
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if(basic_streambuf<charT,traits>::openedFor & ios_base::out){
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--ielement;
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data[ielement] = c;
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return c;
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}
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return traits::eof();
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}
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virtual _UCXXEXPORT int showmanyc(){
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return data.length() - ielement;
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}
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virtual _UCXXEXPORT streamsize xsgetn(char_type* c, streamsize n){
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streamsize i = 0;
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while(ielement < data.length() && i < n ){
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c[i] = data[ielement];
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++i;
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++ielement;
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}
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return i;
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}
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virtual _UCXXEXPORT int_type overflow (int_type c = traits::eof()){
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//Nothing to do
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if(traits::eq_int_type(c,traits::eof())){
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return traits::not_eof(c);
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}
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//Actually add character, if possible
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if(basic_streambuf<charT,traits>::openedFor & ios_base::out){
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if(oelement >= data.length()){
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data.push_back(c);
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}else{
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data[oelement] = c;
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}
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++oelement;
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return c;
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}
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//Not possible
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return traits::eof();
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}
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virtual _UCXXEXPORT basic_streambuf<charT,traits>* setbuf(charT*, streamsize){
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//This function does nothing
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return this;
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}
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virtual _UCXXEXPORT streamsize xsputn(const char_type* s, streamsize n){
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data.replace(oelement, n, s, n);
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oelement += n;
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return n;
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}
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virtual _UCXXEXPORT pos_type seekoff(off_type off, ios_base::seekdir way,
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ios_base::openmode which = ios_base::in | ios_base::out)
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{
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//Test for invalid option
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if( (which & ios_base::in) && (which & ios_base::out) && (way == ios_base::cur)){
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return -1;
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}
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//Calculate new location
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size_type newpos = 0;
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if(way == ios_base::beg){
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newpos = off;
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}else if(way == ios_base::cur){
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if(which & ios_base::out){
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newpos = data.length() + off;
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}
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if(which & ios_base::in){
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newpos = ielement + off;
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}
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}else{
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newpos = data.length() + off;
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}
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//Test for error conditions
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if(newpos > data.length()){
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return -1;
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}
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//Shuffle pointers
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if(which & ios_base::in){
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ielement = newpos;
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}
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if(which & ios_base::out){
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data.resize(newpos);
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if(ielement > data.length()){
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ielement = data.length();
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}
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}
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return newpos;
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}
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virtual _UCXXEXPORT pos_type seekpos(pos_type sp,
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ios_base::openmode which = ios_base::in | ios_base::out)
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{
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return seekoff(sp, ios_base::beg, which);
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}
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basic_string<charT,traits,Allocator> data;
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size_type ielement;
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size_type oelement;
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};
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template <class charT, class traits, class Allocator> class _UCXXEXPORT basic_istringstream
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: public basic_istream<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef typename traits::int_type int_type;
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typedef typename traits::pos_type pos_type;
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typedef typename traits::off_type off_type;
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explicit _UCXXEXPORT basic_istringstream(ios_base::openmode m = ios_base::in)
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: basic_ios<charT, traits>(&sb), basic_istream<charT,traits>(&sb), sb(m)
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{
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}
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explicit _UCXXEXPORT basic_istringstream( const basic_string<charT,traits,Allocator>& str,
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ios_base::openmode which = ios_base::in)
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: basic_ios<charT, traits>(&sb), basic_istream<charT,traits>(&sb), sb(str, which)
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{
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}
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virtual _UCXXEXPORT ~basic_istringstream() { }
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_UCXXEXPORT basic_stringbuf<charT,traits,Allocator>* rdbuf() const{
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return &sb;
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}
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_UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
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return sb.str();
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}
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_UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
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sb.str(s);
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basic_istream<charT,traits>::clear();
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}
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private:
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basic_stringbuf<charT,traits,Allocator> sb;
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};
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template <class charT, class traits, class Allocator> class _UCXXEXPORT basic_ostringstream
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: public basic_ostream<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef typename traits::int_type int_type;
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typedef typename traits::pos_type pos_type;
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typedef typename traits::off_type off_type;
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explicit _UCXXEXPORT basic_ostringstream(ios_base::openmode m = ios_base::out)
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: basic_ios<charT, traits>(&sb), basic_ostream<charT,traits>(&sb), sb(m)
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{
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}
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explicit _UCXXEXPORT basic_ostringstream(const basic_string<charT,traits,Allocator>& str,
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ios_base::openmode which = ios_base::out)
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: basic_ios<charT, traits>(&sb), basic_ostream<charT,traits>(&sb), sb(str, which)
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{
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}
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virtual _UCXXEXPORT ~basic_ostringstream() { }
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_UCXXEXPORT basic_stringbuf<charT,traits,Allocator>* rdbuf() const{
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return &sb;
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}
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_UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
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return sb.str();
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}
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_UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
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sb.str(s);
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basic_ostream<charT,traits>::clear();
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}
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private:
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basic_stringbuf<charT,traits,Allocator> sb;
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};
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template <class charT, class traits, class Allocator> class _UCXXEXPORT basic_stringstream
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: public basic_iostream<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef typename traits::int_type int_type;
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typedef typename traits::pos_type pos_type;
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typedef typename traits::off_type off_type;
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explicit _UCXXEXPORT basic_stringstream(ios_base::openmode which = ios_base::out|ios_base::in)
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: basic_ios<charT, traits>(&sb), basic_iostream<charT,traits>(&sb), sb(which)
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{
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}
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explicit _UCXXEXPORT basic_stringstream(const basic_string<charT,traits,Allocator>& str,
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ios_base::openmode which = ios_base::out|ios_base::in)
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: basic_ios<charT, traits>(&sb), basic_iostream<charT,traits>(&sb), sb(str, which)
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{
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}
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virtual _UCXXEXPORT ~basic_stringstream(){ }
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_UCXXEXPORT basic_stringbuf<charT,traits,Allocator>* rdbuf(){
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return &sb;
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}
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_UCXXEXPORT basic_string<charT,traits,Allocator> str() const{
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return sb.str();
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}
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_UCXXEXPORT void str(const basic_string<charT,traits,Allocator>& s){
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sb.str(s);
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basic_iostream<charT,traits>::clear();
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}
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private:
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basic_stringbuf<charT, traits> sb;
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};
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#ifdef __UCLIBCXX_EXPAND_SSTREAM_CHAR__
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#ifndef __UCLIBCXX_COMPILE_SSTREAM__
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#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
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template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::
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basic_stringbuf(ios_base::openmode which);
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template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::~basic_stringbuf();
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#endif // __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
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template <> _UCXXEXPORT basic_string<char, char_traits<char>, allocator<char> >
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basic_stringbuf<char, char_traits<char>, allocator<char> >::str() const;
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template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type
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basic_stringbuf<char, char_traits<char>, allocator<char> >::
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pbackfail(basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type c);
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template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::pos_type
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basic_stringbuf<char, char_traits<char>, allocator<char> >::
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seekoff (basic_stringbuf<char, char_traits<char>, allocator<char> >::off_type off,
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ios_base::seekdir way,
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ios_base::openmode which
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);
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template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type
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basic_stringbuf<char, char_traits<char>, allocator<char> >::
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overflow (basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type c);
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template <> _UCXXEXPORT basic_stringbuf<char, char_traits<char>, allocator<char> >::int_type
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basic_stringbuf<char, char_traits<char>, allocator<char> >::underflow ();
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template <> _UCXXEXPORT streamsize basic_stringbuf<char, char_traits<char>, allocator<char> >::
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xsputn(const char* s, streamsize n);
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#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
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template <> _UCXXEXPORT basic_stringstream<char, char_traits<char>, allocator<char> >::
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basic_stringstream(ios_base::openmode which);
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template <> _UCXXEXPORT basic_stringstream<char, char_traits<char>, allocator<char> >::~basic_stringstream();
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template <> _UCXXEXPORT basic_istringstream<char, char_traits<char>, allocator<char> >::~basic_istringstream();
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template <> _UCXXEXPORT basic_ostringstream<char, char_traits<char>, allocator<char> >::~basic_ostringstream();
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#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__
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#endif
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#endif
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#pragma GCC visibility pop
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}
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#endif
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